[Rd] optimized BLAS

[Prof Brian Ripley]

As a few of you will know, Dr Goto's BLAS is now available again 
(http://www.tacc.utexas.edu/resources/software/software.php), but only for 
academic use and only for Linux (at least in binary form, and source-code 
licenses are not yet available).

http://www.netlib.org/lapack pointed me to AMD's ACML 
(http://www.amd.com/acml).  This has a less restrictive licence, and seems 
at least as fast as the Goto BLAS - it is also a full optimized LAPACK.

What does seem a bit confused is all the references to AMD64, when they 
also supply 32-bit non-SSE2 and even non-SSE versions (and there are no 
such versions of AMD64 to my knowledge).  It runs on my Athlon XP systems, 
and even under Windows.

I've added comments in R-admin.texi and Windows support, in both R-patched 
and R-devel.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595